Removing `react-select` and the new autocomplete. This experiment has
failed, so cleaning things up now.

Seems to build fine, will test later.

The final `Autocomplete` refactors. After this is merged what's
remaining is to do extensive testing and address the bugs in
https://github.com/actualbudget/actual/issues/773

This PR moves `Nordigen` autocomplete to the new one without using a
feature flag. IMO this is a safe change given the simple nature of the
Nordigen autocomplete component.

Related to: https://github.com/actualbudget/actual-server/pull/144

See the above PR for more details.

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<img width="577" alt="Screenshot 2023-03-05 at 17 54 10"
src="https://user-images.githubusercontent.com/886567/222977363-605f8b1e-be7d-4594-93c7-dfaa6cb15ac3.png">